Grinding-machine.



E. COOK. GRINDING MACHINE.

APPLICATION FILED NOV. 16, 1905.

PATENTBD NOV. 26, 1907.

3 SHEETS-SHEET lv Witocsses:

PATENTED NOV. 26, 1907.

E. COOK. GRINDING MACHINE. APPLICATION FILED N0'V.18.1905.

HHUPH a SHBETS SHEET 2- No. 871,785. PATENTED NOV. 26, 1907.

GRINDING MACHINE. APPLIOATION FILED NOV. 1a, 1905.

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EUGENE COOK, OF KALAMAZOO, MICHIGAN.

GRINDING-MACHINE Specification of Letters Patent.

Patented Nov. 26, 1907.

Application filed November 16,1905. Serial No. 287.685.

T 0 all whom it may concern:

Be it known that I, EUGENE Coon, a citizen of the United States,residing at Kalamazoo, in the county of Kalamazoo and State of Michigan,have invented certain new and useful Improvements in G1'imling\lachines, of which the following is a specification.

This invention relates to improvements in grinding machines. It relatesparticularly to a grinding machine attachment for railway track drillssuch as is illustrated in my application for Letters Patent filed Septemher 9, 1905, Serial No. 277,706, and l have illustrated it as applied toor in combination with such a structure, although it is desirable foruse in other relations.

The objects of this invention are, first, to provide a drill grinder incombination with a railway track drill. Second, to provide an improvedgrinding machine adapted to be attached to a railway track drill. Third,to provide an improved grinding machine which is simple and compact instructure, and one in which the working parts are fully protected frominjury.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearlyillustrated in the accompanying drawings forming a part of thisspecification, in which- Figure 1 is a detail sectional view of astructure embodying the features of my invention, taken on a linecorresponding to line 1 1 of Fig. 2, the standard and operating meansbeing shown in full lines. Fig. 2 is a detail side elevation lookingfrom the left of Fig. 1, the cap portion of the casing for the grindingwheel being indicated by dotted lines in its open position. Fig. 3 is adetail vertical section taken on a line corresponding to line 3 3 ofFig. 1. Fig. at is a detail hori- Zontal section taken on a linecorresponding to line 4 f of Fig. 2, showing the tool holder and itsrelation to the grinding wheel. Fig. 5 is a front elevation of the toolholder removed from the machine. Fig. 6 is a crosssection of thetool-holder, taken on a line corresponding to line 6 6 of Figs. 1 and 7.

l l l l l l l l l l Fig. 7 is a sectional view taken on line 7 7 of Fig.(3. Fig. 8 is a front elevation of the tail-block ll of the toolholder.Fig. 9 is an enlarged detail taken on a line corresponding to line 9 9of Fig. 1, showing the means of securing the drill grinder in positionupon the standard of the track drill and its connections to the crankthereof. Fig. 10 is a detail vertical section taken on a line corresponding to line 1.0 10 of .Fig. 9. Fig. 1]. is a detail view similar tothat of Fig. 9, with the grinder removed from the standard. Fig. 12 is adetail vertical section taken on a line corresponding to line 12 12 ofFig. 1. Fig. 13 is a detail sectional view taken on a line correspondingto line 13 13 of Fig. 1, showing further details of the connection ofthe grinder to the frame or standard. Fig. 1 1 is a detail section takenon a line corresponding to line 1 1 14 of Fig. 2, showing structuraldetails of the casing.

111 the drawings the sectional views are taken looking in the directionof the little arrows at the ends of the section lines,and similarletters of reference refer to similar parts throughout the severalviews.

Referring to the drawings, A represents the standard portion of theframe of a rail way track drill. A is a supporting brace connectedthereto by the pivot rod a. Arranged transversely of the standard in thebearings A A is a crank shaft B having irregular projecting ends Badapted to receive the crank B. On the shaft B is a beveled gear 1)arranged to mesh with the beveled gear I) on the driving shaft C of thedrill, the details of which are not here illustrated. They arepreferably, however, that of my improved track drill for which I havemade application for Letters Patent hereinbefere mentioned.

The crank shaft bearing A projects outwardly to engage the projectingannular flange D on the casing I), the flange fitting thereon like asleeve. The bearing 1 is provided with a spirally arranged slot aadapted to receive an inwardly projecting pin (Z carried by the flange Dof the easing, so that the flange may be slipped upon the bearing and bygiving it a twisting movement it is drawn into position.

On the casing D is a projecting finger J arranged to rest against theprojecting end of the pivot rod a when the grinder is in its operativeposition. \Vithin the casing is a bearing d forj theLgear E the1hub:E of

which is adapted to receive the irregular end B of the shaft when thecasing is in position, so that it is driven thereby. In the lower partof the casing D is a transversely arranged shaft F on which there is apinion E E. The shaft F also carries a gear F. The casing or shell Dalso contains a bearing for one end of the shaft G of the grinding wheelG. The grinding wheel G is incased in a shell or casing D secured uponthe side of the gear casing D. The casing D is provided with a suitablebearing for the outer end of the shaft G. On the inner end of the shaftG is a pinion G arranged to mesh with the gear F. By this train of gearsI am enabled to drive the grinding wheel at a very high rate of speedwith a compara tively slow speed of the shaft B.

The grinding wheel is clamped upon the shaft G by the blocks 9 9 betweenwhich it is arranged. The grinding wheel casing D is provided with anopening D to receive the drill to be ground. On the casing D is a pairof outwardly projecting platelike brackets d, having perforationstherein to receive the journal H of the tool-holder H. The tool holder-His arranged in an inclined position, or at an acute angle in relation toits journal, so that the drill resting therein-as is indicated in Fig. 1of the drawing-is presented to the grinding wheel at the proper angle.

The drill holder consists of a V-shaped trough adapted to receive thedrill, as I, to be ground. At the forward end of the holder is a liprest I which projects upwardly in position to engage one of the flukesof the drill I. (See Fig. 5.) The journal H of the drill holder isplaced at one side of the center line thereof, so that as the holder isrocked on its pivot, the point of the drill is presented to the grindingWheel to secure the desired clearance. The drill holder H is providedwith an adjustable tail-piece H. This tail-piece is provided with adownwardly projecting lug H which is arranged in the longitudinal slot hin the drill holder. A setscrew h is provided for adjustably securingthe tail-piece H in its adjusted positions, said screw being arrangedthrough the slot h, as clearly appears in Figs. 6 and 7.

In order to secure more perfect adjustment of the drill to the grindingwheel, the block H is provided with a thumb-screw h adapted to engagethe end of the drill. It is evident that the tail-piece may be adjustedto accommodate long or short drills, and the thumb-screw h can be usedfor the finer adjustments.

The brackets d are preferably provided with several bearing holes forthe pivot H of the drill holder, so that it may be adjusted to utilizepractically the entire face of the grind arranged to mesh with the gearI ing wheel. The upper portion D of the casing D of the grinding wheelis in the form of a cover, and is hinged at 61 so that it may be openedto eXpose'the periphery of the grinding wheel, and also a greaterportion of its face, should it be desired to utilize it for grindingknives, chisels, and the like. This cover is preferably provided with ahook 76 arranged to engage the set screw it, so that the cover for thegrinding wheel may be effectively locked in its closed position.

In the operation of track drills it is found that owing to theconditions under which the same are operated, the drills used are verysoon dulled. It is a very great inconvenience to carry a supplysufficient for a days work, and also, where a number of drills arecarried they are more likely to become lost.

In my improved drill grinder I have provided a structure which isreadily portable and which can be quickly attached or detached to thetrack drill, which furnishes a suitable support therefor and aconvenient operating means.

The operative parts of my improved grinder are fully protected and atthe same time the structure is very compact and light and can be readilytransported to the place i of operating the drill without particular infconvenience and without danger of injury to the grinder itself. The gearare protected I from the dust from the grinding wheel so that the wearthereon is reduced to a minimum.

While I have particularly designed my improved grinder to be applied tomy track drill hereinbefore mentioned, I desire to remark that it isapplicable for use in other relations, and I desire to claim the samespecifically in this relation as well as broadly.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. The combination of a standard; a powershaft arranged transverselythereon, a projecting bearing for said shaft having a spirally arrangedgroove therein; a casing D having an outwardly projecting annularsleeve-like flange thereon, adapted to receive the said projectingbearing, said flange having an inwardly projecting pin arranged thereonto engage the said spiral groove;.a bearing in said casing arranged inalinement with the said flange thereon; a gear E having a hub E mountedin said bearing in said casing, said hub being arranged to receive theend of said crank shaft; a shaft F arranged in the lower portion of saidcasing; a pinion E thereon arranged to mesh with said gear E; a gearjFmounted on said shaft F; a grinding wheel shaft G; a bearing in saidcasing for the inner endl thereof; a grinding wheel mount-ed on saidshaft G; and a casing D for said grinding wheel secured upon the side ofsaid casing D, having a bearing for the outer end of said grinding wheelshaft, all coacting for the purpose specified.

2. The combination of a standard; a power-shaft; a projecting bearingfor said shaft, having a spirally arranged groove therein; a casinghaving an outwardly projecting annular sleeve-like flange thereonadapted to receive the said projecting hearing, said flange having aninwardly projecting pin thereon arranged to engage the said spiralgroove; a bearing in said casing ar-- ranged in alinement with the saidflange thereon; a driven gear mounted in said bearing in said casing,arranged to receive the end of said crank-shaft; a grinding wheel shaft;a bearing in said casing for the inner end thereof; a grinding wheelmounted on said shaft; a train of multiplying gear connecting saiddriven gear to said grinding Wheel, arranged in said casing; and acasing D for said grinding wheel secured upon the side of said casing D,having a bearing for the outer end of said grinding wheel shaft, saidcasing having an opening in the side thereof, all coacting for thepurpose specified.

3. The combination of a standard; a power shaft a projecting bearing forsaid sh aft, having a spirally arranged groove therein; a casing havingan outwardly projecting annular sleeve-like flange thereon adapted toreceive the said projecting bearing, said flange having an inwardlyprojecting pin thereon arranged to engage the said spiral groove; abearing in said casing arranged in alineinent with the said flangethereon; a driven gear mounted in said bearing in said casing, ar rangedto receive the end of said crank shaft; a grinding wheel; and a train ofmultiplying gear connecting said driven gear to said grinding wheel,arranged in said casing, all eoacting for the purpose specified.

4. The combination of a standard; a

power shaft: a casing; a driven gear adapted to receive the end of saidpower shaft, arranged in said casing; means for detachably securing saidcasing to said standard; a grinding wheel, and a train of multiplyinggears also mounted in said casing for connecting said grinding wheel tosaid driven gear, for the purpose specified.

5. The combination with a casing, of a driven gear arranged therein; ashaft F arranged in the lower portion of said casing; a pinion Earranged to mesh with said driven gear; a gear F mounted on said shaftF; a grinding wheel shaft G a bearing in said casing for the inner endthereof; a grinding wheel mounted on said shaft G; and a casing D forsaid grinding wheel, secured upon the side of said main casing, having ahearing for the outer end of the grinding wheel shaft and a hinged coverportion, for the purpose specified.

6. The combination with a casing, of a driven gear arranged therein; ashaft F arranged in the lower portion of said casing; a pinion Earranged to mesh with said driven gear; a gear F mounted on said shaftF; a grinding wheel shaft G a bearing in said casing for the inner endthereof; a

grinding wheel mounted on said shaft G;

and a casing D for said grinding Wheel secured upon the side of saidmain casing, having a bearing for the outer end of the grinding wheelshaft, for the purpose specifled.

In witness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

EUGENE COOK. [L. s.]

WVitnesses:

Oris .A. EARL, A. J. Arman.

